Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio

Stereolithographic printing (SL) is widely used to create mini/microfluidic devices; however, the formation of microchannels smaller than 500 μm with good inner surface quality is still challenging due to the printing resolution of current commercial printers and the z-overcure error and scalloping...

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Autores principales:	Pin-Chuan Chen, Po-Tsang Chen, Tuan Ngoc Anh Vo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	stereolithography additive manufacturing monolithic polymeric microfluidics high aspect ratio microchannels Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/4871b71d9450420d92b1fb35efca88df
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spelling	oai:doaj.org-article:4871b71d9450420d92b1fb35efca88df2021-11-11T18:46:09ZUsing Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio10.3390/polym132137502073-4360https://doaj.org/article/4871b71d9450420d92b1fb35efca88df2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3750https://doaj.org/toc/2073-4360Stereolithographic printing (SL) is widely used to create mini/microfluidic devices; however, the formation of microchannels smaller than 500 μm with good inner surface quality is still challenging due to the printing resolution of current commercial printers and the z-overcure error and scalloping phenomena. In the current study, we used SL printing to create microchannels with the aim of achieving a high degree of dimensional precision and a high-quality microchannel inner surface. Extensive experiments were performed and our results revealed the following: (1) the SL printing of microchannels can be implemented in three steps including channel layer printing, an oxygen inhibition process, and roof layer printing; (2) printing thickness should be reduced to minimize the scalloping phenomenon, which significantly improves dimensional accuracy and the quality of inner microchannel surfaces; (3) the inclusion of an oxygen inhibition step is a critical and efficient approach to suppressing the z-overcure error in order to eliminate the formation of in-channel obstructions; (4) microchannels with an extremely high aspect ratio of 40:1 (4000 μm in height and 100 μm in width) can be successfully manufactured within one hour by following the three-step printing process.Pin-Chuan ChenPo-Tsang ChenTuan Ngoc Anh VoMDPI AGarticlestereolithography additive manufacturingmonolithic polymeric microfluidicshigh aspect ratio microchannelsOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3750, p 3750 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	stereolithography additive manufacturing monolithic polymeric microfluidics high aspect ratio microchannels Organic chemistry QD241-441
spellingShingle	stereolithography additive manufacturing monolithic polymeric microfluidics high aspect ratio microchannels Organic chemistry QD241-441 Pin-Chuan Chen Po-Tsang Chen Tuan Ngoc Anh Vo Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
description	Stereolithographic printing (SL) is widely used to create mini/microfluidic devices; however, the formation of microchannels smaller than 500 μm with good inner surface quality is still challenging due to the printing resolution of current commercial printers and the z-overcure error and scalloping phenomena. In the current study, we used SL printing to create microchannels with the aim of achieving a high degree of dimensional precision and a high-quality microchannel inner surface. Extensive experiments were performed and our results revealed the following: (1) the SL printing of microchannels can be implemented in three steps including channel layer printing, an oxygen inhibition process, and roof layer printing; (2) printing thickness should be reduced to minimize the scalloping phenomenon, which significantly improves dimensional accuracy and the quality of inner microchannel surfaces; (3) the inclusion of an oxygen inhibition step is a critical and efficient approach to suppressing the z-overcure error in order to eliminate the formation of in-channel obstructions; (4) microchannels with an extremely high aspect ratio of 40:1 (4000 μm in height and 100 μm in width) can be successfully manufactured within one hour by following the three-step printing process.
format	article
author	Pin-Chuan Chen Po-Tsang Chen Tuan Ngoc Anh Vo
author_facet	Pin-Chuan Chen Po-Tsang Chen Tuan Ngoc Anh Vo
author_sort	Pin-Chuan Chen
title	Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
title_short	Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
title_full	Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
title_fullStr	Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
title_full_unstemmed	Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio
title_sort	using stereolithographic printing to manufacture monolithic microfluidic devices with an extremely high aspect ratio
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4871b71d9450420d92b1fb35efca88df
work_keys_str_mv	AT pinchuanchen usingstereolithographicprintingtomanufacturemonolithicmicrofluidicdeviceswithanextremelyhighaspectratio AT potsangchen usingstereolithographicprintingtomanufacturemonolithicmicrofluidicdeviceswithanextremelyhighaspectratio AT tuanngocanhvo usingstereolithographicprintingtomanufacturemonolithicmicrofluidicdeviceswithanextremelyhighaspectratio
_version_	1718431699069566976

Using Stereolithographic Printing to Manufacture Monolithic Microfluidic Devices with an Extremely High Aspect Ratio

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